Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-addition-rule-943-en_uva-addition-rule-943-en
    nameuva-addition-rule-943-en
    sectionProbability/Elementary Probability/General Rules/Addition rule
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    According to the Centers for Disease Control in the USA, the long-term relative frequency of births to boys in the United States is approximately 0.512. Contrast the events:______
    * A = Two girls,‖ and * B = Two boys.  Then what is the probability that a woman from USA with two children will have either two girls or two boys?


    1. FALSE: 0,238
    2. FALSE: 0,250
    3. FALSE: 0,262
    4. TRUE: 0,500

    1. 0.238: Incorrect
    2. 0.250: Incorrect
    3. 0.262: Incorrect
    4. 0,500: Correct